From the creator of the wildly popular webcomic xkcd, hilarious and informative answers to important questions you probably never thought to ask

Millions of people visit xkcd.com each week to read Randall Munroe’s iconic webcomic. His stick-figure drawings about science, technology, language, and love have an enormous, dedicated following, as do his deeply researched answers to his fans’ strangest questions. The queries he receives range from merely odd to downright diabolical: • What if I took a swim in a spent-nuclear-fuel pool? • Could you build a jetpack using downward-firing machine guns? • What if a Richter 15 earthquake hit New York City? • Are fire tornadoes possible? His responses are masterpieces of clarity and wit, gleefully and accurately explaining everything from the relativistic effects of a baseball pitched at near the speed of light to the many horrible ways you could die while building a periodic table out of all the actual elements. The book features new and never-before-answered questions, along with the most popular answers from the xkcd website. What If? is an informative feast for xkcd fans and anyone who loves to ponder the hypothetical.

Randall Munroe is the author of the #1 New York Times bestsellers What If? and Thing Explainer, the science question-and-answer blog What If, and the popular webcomic xkcd. A former NASA roboticist, he left the agency in 2006 to draw comics on the Internet full-time, supporting himself through the sale of xkcd t-shirts, prints, posters, and books. He likes candlelight dinners and long walks on the beach. Very long walks. Lots of people say they like long walks on the beach, but then they get out on the beach and after just an hour or two, they say they're getting tired. Bring a tent. He lives in Massachusetts.

"What If? maintains a delightfully free-wheeling tone throughout, especially when complicated calculations lead to whimsical results...Despite all the hard facts and gigantic numbers, it never feels like a textbook—and you don’t have to be a rocket scientist to enjoy it. A" —Entertainment Weekly

"Catchy and approachable...There's plenty of scientific rigor behind his elaborate explanations but he punctuates them with sly humor and winningly primitive cartoon diagrams...A cut above so many popular science and technology books." --NPR.org

"It’s fun to watch as Munroe tackles each question and examines every possible complication with nerdy and methodical aplomb, his distinctive scribblings providing clever running commentary of peanut-gallery jokes as his train of thought (sometimes) happily derails. The delightfully demented ‘What If?’ is the most fun you can have with math and science, short of becoming your own evil genius...We feel the tug of Munroe’s playful yet existentially-tinged worldview, and all that geek logic and number-crunching becomes unexpectedly poignant." --Boston Globe

“Munroe has hit on a wonderful form of science and engineering communication that can do so much—extolling the value of analytical thinking, examining data, and doing back-of-the-envelope calculations—while entertaining readers at the same time… an incredibly fun book with quirky, hand-drawn pictures.” —American Scientist

"[What If?] has solved my annual birthday-present and holiday-gift dilemmas for a large group of people...What makes Munroe's work so fantastic is a combination of two elements: his commitment to trying to answer even the weirdest question with solid science, and his undeniable sense of humor." —Huffington Post

"Munroe takes inane, useless and often quite pointless questions asked by real humans (mostly sent to him through his website), and turns them into beautiful expositions on the impossible that illuminate the furthest reaches, almost to the limits, of the modern sciences..The answers are all illustrated with XKCD’s trademark stick figures...and these are eminently approachable." —Newsweek

"What If? Serious Scientific Answers to Absurd Hypothetical Questions includes old favorites, new inquiries and the mix of expert research and accessible wit that has made Munroe a favorite among both geeks and laymen."—TIME

"Loaded with the same dry wit and blank-faced stick figures that populate xkcd, What If? is that rare book that will have you laughing as you learn just how a mass extinction might unfold." --Discover

"Wide-ranging and strangely poignant...This book is tons of fun...Munroe’s spiffy essays do tend to resemble the sort of lectures that cool professors give on the first day of class...It’s quality entertainment." --Washington Independent Review of Books

“Munroe's brilliant What-If? column—which features scientifically rigorous, utterly absurd answers to ridiculous hypotheticals—has been on the bestseller lists since it was announced in March. Today, it hits shelves and: It. Is. A. Triumph.” —BoingBoing

"What If? is a fast, engrossing read…The charm of What If? lies in the ease Munroe has jumping past intensely interesting conclusions and onto his next thought, tangent, or consequence. It’s as if Munroe is a unseen stage technician pulling back the curtain — the answers were always there, we just needed someone who knew how to show us. Even he seems surprised at what he finds.” – Nerdist

"Those who enjoyed the irreverent style of Allie Brosh’s best-selling memoir, Hyperbole and a Half, will enjoy Munroe’s serious and silly musings on everything from science to romance." --Library Journal

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